Spruce

Picea, the spruces, is a genus of around 30-40 species of coniferous trees that grow in cold boreal to cool temperate regions around the Northern Hemisphere. They are dominant over vast areas of the huge boreal taiga forests, but species diversity there is low, with only four species (Picea abies in Europe, Picea obovata in Asia, and Picea glauca and Picea mariana in North America); species divers...